皇甫川流域不同生态环境区5个共有植物种群性状特征的比较研究

用比较样地的方法调查不同生态环境类型对羊草，大针茅，达乌里胡枝子，阿尔泰狗娃花，糙隐子草5个植物种群各性状的影响，结果表明，植物高度，干重，生殖枝（干重）／非生殖枝（干重），冠幅，叶片大小，花序长短等性状随生态环境类型的不同有一定规律性的变化，总体来说，原生环境区和生态恢复治理区植物种群各性状特征相对较优，而生态环境严重破坏的水土流失地区相对较劣，但是，这三种生态环境类型都没有使植株大小和生殖枝一营养枝比较等性状保持最优配置，均不能充分发挥株丛和枝条的生长和生殖能力。

The Comparative Study of the Characters of Five mutual species in Different Ecology environmental region in HuFuchuan Watershed

The paper studies the characters of Leymus chinensis population, Stipa grandis population, Lespedeza dahurica population, Heteropappus altaicus population and Cleistogenes squarrosa population caused by different ecology environmental region.The results were as follows: The characters, such as height of plant, dry biomass, size of leaf, length of ear and so on, change regularly according to different ecology environmental region. As a whole, the characters of plants in Primary environmental region and Ecological restoration region were better, while worse in Soil and water loss region. But all the ecology environmental region did not lead to a rational self control on the size, the ratio on vegetative and reproductive tillers.